blob: e0668585ba376b719696ea496efd4aa4a8ccd4fb [file] [log] [blame]
// Copyright 2010 Google Inc. All Rights Reserved.
// Use of this source code is governed by an Apache-style license that can be
// found in the COPYING file.
// A wrapper around ZLib's CRC functions to put them in the rlz_lib namespace
// and use our types.
#include "rlz/lib/assert.h"
#include "rlz/lib/crc32.h"
#include "rlz/lib/string_utils.h"
#include "third_party/zlib/zlib.h"
namespace rlz_lib {
int Crc32(const unsigned char* buf, int length) {
return crc32(0L, buf, length);
bool Crc32(const char* text, int* crc) {
if (!crc) {
ASSERT_STRING("Crc32: crc is NULL.");
return false;
*crc = 0;
for (int i = 0; text[i]; i++) {
if (!IsAscii(text[i]))
return false;
*crc = crc32(*crc, reinterpret_cast<const unsigned char*>(text + i), 1);
return true;
} // namespace rlz_lib